-2. What is true about elements P, Q, R, and S?
V
W
X
Y
PQRS
A.
They are in the same period
B.
They are in the same group
C.
They are nonmetals
D.
They are gases

the answer to this question is 3.

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".

elements make up everything, and they combine to make compounds.

the answer is c